WebA calcium compounds, carbohydrates and fats B carbohydrates, fats and proteins C fats, proteins and vitamins D proteins, vitamins and calcium compounds 16 Why does chewing food speed up digestion? A Bacteria in the food are killed. B Food is mixed with protease. C The surface area of the food is increased. D The taste of food is improved. Web5 sep. 2024 · Chemical digestion is a vital part of the digestive process. Without it, your body wouldn’t be able to absorb nutrients from the foods you eat. While mechanical …
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Web5 aug. 2024 · Key points Dietary fibre is plant material that cannot be digested by the human body. Dietary fibre helps the digestive system to move food through the … Web2 mrt. 2024 · When your body doesn’t get adequate carbohydrates, it looks for another energy source, breaking down the protein in your muscles and body fat to use as energy. Glucose is significant for the brain, which can’t easily use other fuel sources like fat or protein for energy. hilliard city schools canvas
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WebYou will have already studied the digestive system in Key Stage 3 science. For the GCSE exam, you need to know the function of bile and how the digestive enzymes, … WebIGCSE GCSE Biology study guide PDF includes high school question papers to ... fats, body muscles, carbohydrates, cellulose digestion, characteristics of energy, condensation reaction ... liver, mammalian digestive system, molecular biology, mouth and buccal cavity, esophagus, proteins, red blood cells and hemoglobin, stomach and pancreas ... WebFats are made up of 3 fatty acids joined to a single glycerol molecule. We need fats to give us energy. In fact, fats contain more energy than carbohydrates. Our body uses fat as a store of energy. Fat is stored under the skin and around the heart and kidneys. Fats are also needed for warmth (insulation) as they reduce heat loss from the body. hilliard city schools free lunch